title: Caries experience in a child population in a deprived area of Brazil, using ICDAS II.
abstract: The aim of the present study was to assess the caries experience of children aged 6 to 7 years old in a socially deprived suburban area of Brazil's Federal District, using the ICDAS II system and to investigate determinants of dental caries. The survey was carried out in six public schools by three calibrated examiners, on a sample of 835 children. ICDAS II codes had to be converted into dmf/DMF components at surface and tooth levels, resulting in unfamiliar caries variables, to enable some meaningful reporting of the findings. The prevalence of dental caries, including enamel and dentinal carious lesions, in primary teeth was 95.6% and in permanent teeth it was 63.7%. Mean values of d(2)mf(2)-t (enamel and dentinal lesions), d(3)mf(3)-t (dentine lesions), D(2)MF(2)-T and D(3)MF(3)-T indices were 6.9 ± 3.8, 3.2 ± 3.4, 1.7 ± 1.6 and 0.2 ± 0.5, respectively. Enamel carious lesions predominated in the dmf-t/s and DMF-T/S indices. Seven-year-old children had statistically significantly more enamel and dentine carious lesions in permanent teeth than 6-year-old children had. Using ICDAS II, the prevalence of dental caries in both dentitions was very high. In both dentitions, the decay component predominated, with hardly any restorations or extractions observed. The new ICDAS II system leads to overvaluation of the seriousness of dental caries experience and made reporting of outcomes cumbersome. Guidelines on analysing data and reporting results should be agreed upon before this system can be used in epidemiological surveys globally.
authors.affiliation: Department of Pediatric Dentistry, School of Health Sciences, University of Brasília, Brasilia, Brazil.
authors.forename: Rodrigo Guedes
authors.initials: RG
authors.lastname: de Amorim
authors.forename: Maria José
authors.initials: MJ
authors.lastname: Figueiredo
authors.forename: Soraya Coelho
authors.initials: SC
authors.lastname: Leal
authors.forename: Jan
authors.initials: J
authors.lastname: Mulder
authors.forename: Jo E
authors.initials: JE
authors.lastname: Frencken
mesh_terms: D001938:Brazil / Q000453:epidemiology; D002648:Child; D003442:Crowns / Q000706:statistics & numerical data; D003467:Cultural Deprivation; D004245:DMF Index; D003731:Dental Caries / Q000145:classification / Q000453:epidemiology*; D003743:Dental Enamel / Q000473:pathology; D019232:Dental Restoration Failure; D003793:Dental Restoration, Permanent / Q000706:statistics & numerical data; D003794:Dental Restoration, Temporary / Q000706:statistics & numerical data; D003804:Dentin / Q000473:pathology; D016021:Epidemiologic Studies; D005260:Female; D006801:Humans; D007180:Incisor / Q000473:pathology; D008297:Male; D008963:Molar / Q000473:pathology; D010895:Pit and Fissure Sealants / Q000627:therapeutic use; D015995:Prevalence; D018881:Suburban Health / Q000706:statistics & numerical data; D014081:Tooth Extraction / Q000706:statistics & numerical data; D014094:Tooth, Deciduous / Q000473:pathology; D014097:Tooth, Unerupted / Q000453:epidemiology; D035862:Vulnerable Populations / Q000706:statistics & numerical data*
chemical_list: D010895:Pit and Fissure Sealants